Investigation into the nonlinear damage model of coal containing gas
Taken the nonlinear deformation property of coal into considering, the nonlinear constitutive equation was founded. And considering the compressible property of gas, the idea of compressive energy of gas was introduced. Based on the continuous damage theory and mesoscopic damage theory, assumed that the damage variable has a power function relation with the porosity, applied the thermodynamics conservation laws, one new nonlinear damage constitutive model of coal containing gas was deduced and obtained, and the rationality of the new model was proved through the former experimental results. This model can provide theoretical reference for understanding and solving these dynamic gas disasters such as the outburst of coal and rock. And through this theory, the prevention measures will be applied to deal with the dynamic gas disasters according to changing mining conditions.
nonlinear damage model coal containing gas outburst of coal and gas
YANG Xiaobin WANG Xiaojun
College of Recourse and Safety Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
国际会议
The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)
北京
英文
616-621
2011-10-27（万方平台首次上网日期，不代表论文的发表时间）